Good ways to restart all the computers in a remote cluster?

Posted by vgm64 on Super User See other posts from Super User or by vgm64
Published on 2010-03-23T19:18:20Z Indexed on 2010/03/23 19:23 UTC
Read the original article Hit count: 505

Filed under:

reboot

|

unix

|

cluster

I have a cluster that I manage and from time to time I get emails from each node (and head node) begging to be restarted after an automatic upgrade.

Currently, my best solution so far is a shell script like:

 $> cat cluster_reboot.sh
 ssh [email protected] reboot
 ssh [email protected] reboot
 ssh [email protected] reboot
 ssh [email protected] reboot
 ssh [email protected] reboot
 ssh [email protected] reboot

I end up just typing the root password six times, but it works, I guess. Is there a better way? Can I force the head node to reboot the computers for me?

© Super User or respective owner

Related posts about reboot

Can't reboot netbook with any of the reboot parameters

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
I have a Sony VPCW218AG netbook that I've dual-booted with Ubuntu 10.10. Unlike the preinstalled Windows 7, Ubuntu will not reboot on this computer. Rebooting from Gnome, using the reboot command and SysRq+REISUB all don't work; they end hanging with a blank screen. I have read that Atom netbooks… >>> More
How to display reboot required user notification after installing a custom package in linux?

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
After installing a custom package I should force a reboot of the system. I looked at couple of solutions to this use notify-send to display user notification followed by a reboot command, which did work as planned. But the user notification is only shown when I install the package from command… >>> More
How to reboot a WindowsCE5 device?

as seen on Super User - Search for 'Super User'
Is there a way to force a device running Windows CE 5.0 to reboot? I remember Ctrl+Alt+Del from the old days on PC's, but I don't know if there's a keyboard-combination I could use on this Datalogic BlackJet, and I can't seem to find a reset pin-hole. I tried taking the battery out, and waiting a… >>> More
Rebooting access point via SSH with pexpect... hangs. Any ideas?

as seen on Server Fault - Search for 'Server Fault'
When I want to reboot my D-Link DWL-3200-AP access point from my bash shell, I connect to the AP using ssh and I just type reboot in the CLI interface. After about 30 seconds, the AP is rebooted: # ssh [email protected] [email protected]'s password: ******** Welcome to Wireless SSH Console!! ['help'… >>> More
Good ways to restart all the computers in a remote cluster?

as seen on Super User - Search for 'Super User'
I have a cluster that I manage and from time to time I get emails from each node (and head node) begging to be restarted after an automatic upgrade. Currently, my best solution so far is a shell script like: $> cat cluster_reboot.sh ssh [email protected] reboot ssh [email protected] reboot … >>> More

Related posts about unix

polkit: disable all users except those in group wheel?

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
Is it possible to do the following using 1 polkit .pkla file? Disable all users except those in the wheel group from using polkit. The users in the wheel group will need to provide the root password when using polkit. /etc/polkit-1/localauthority/50-local.d/wheel-only.pkla [disable all users… >>> More
How to find other end of unix socket connection?

as seen on Server Fault - Search for 'Server Fault'
I have a process (dbus-daemon) which has many open connection over UNIX sockets. One of these connections is fd #36: =$ ps uw -p 23284 USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND depesz 23284 0.0 0.0 24680 1772 ? Ss 15:25 0:00 /bin/dbus-daemon --fork… >>> More
Meaning of directories on Unix and Unix like systems

as seen on Server Fault - Search for 'Server Fault'
I've been using Linux for a couple of years now but I still haven't figured out what the origin or meaning of some the directory names are on Unix and Unix like systems. E.g. what does etc stand for or var? Where does the opt name come from? And while we're on the topic anyway. Can someone give a… >>> More
Easy understanding of UNIX and UNIX shell scripting!!

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi All, I am beginner to UNIX,UNIX Shell Scripting. Can you please guide me through any excellent sites for unix(which are easy to understand),some study materials(tutorials),video tutorials. Please help!! Thanks! >>> More
Is Mac OS X a licensed Unix or Unix-like clone that conforms to Unix specification?

as seen on Super User - Search for 'Super User'
Is Mac OS X developed on a licensed Unix or is it a Unix-like clone that, unlike Linux, conforms to Unix specification well enough to be registered as a Unix OS. Not until Leopard, Mac OS X did not gain the Unix certification. But in Leopard, Terminal still print: GNU bash, version 3.2.48(1)-release… >>> More